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Hello guys Simple Question: How can I get the torque values required to achieve slip resistance using this table? Is it by: [Bolt Dia x Bolt Pretension x μ]? μ:mean slip coefficient for Class A or B surfaces

Hello guys: I have a situation where I have to stiffen an existing slab under compression load of 370 kN (83 kips). that coming from a steel column above, Please see attached sketches. Im trying to stiffen the slab by adding steel beam beneath it ( 3m length from wall to wall). My...

I was wondering about that for a few days, (Excuse my question if it was kind of stupid or if I'm missing something). Usually when I brace rafters with flange brace on a FEM, purlins fail due to compression buckling. Since purlins would buckle easily,Shouldnt the connection of the flange...

Table 3.1 in (AISC Specs2010) gives the minimum bolts pretension for A325, A490 bolts. Should I use these values when tightening? or do they need to be divided by the slip coeff since I have Slip critical bolts? Lets say I have 5/8'' bolt size A325, the pretension load given in the table is 19...

Hello Guys I have this steel structure plan view as the sketch shows. How do I handle with the lateral stability in this case? As shown, in X direction most of the frames are supported by an existing concrete slab or shear wall. In Y direction some of members are supported by the shear wall...

Hi guys, Real quick...Is there a software that checks a through anchor steel to concrete connection? I think Profis doesn't have this feature. Thanks,

I have this limited RC wall (AROUND 8 inch width). Base plate with post installed epoxy anchors size 7/8''. My question is can I use this single line bolt layout to achieve the minimum edge distance between the concrete edge and anchor? knowing that it's a fixed base plate in major axis with 400...

Hello Guys, I received this steel Canopy (already designed) to design a sub-frame (grey elements in the sketch attached) for the stone cladding at top and bottom of the cantilevers. The consultant provided me with the deflections values for the steel cantilevers at different locations to...

I have this Inclined steel frame as in the pictures attached, The frame is fixed from the bottom and attached by the transverse beams as well which are fixed to a shear wall. Due to thermal loads I released the columns from the top but I threw a plate directed in the weak axis with slotted...

Hello guys What is the best configuration for anchor reinforcement for tension & Shear? I'm designing a bearing plate which has a significant bending in minor axis. The connection fails at breakout check in both tension and Shear So I want to reinforce the anchors with ties according to FIG...

I'm struggling with a steel tube to R.C slab shear connection. I have a 600 kN (Vu) in vertical direction which causes huge failure regarding concrete breakout vertically. Rods are chemical -post installed- rods (Embedment Length = 300 mm). Ca1 = 100 mm ( distance from center of last rod to...

Is this placement of anchor rods for a Column that carry only gravity load (Compression force) acceptable? It's a base plate for a room inside a building and the forth rod can not be installed unless the plate is replaced with another one with new holes. Check the attachment please... I...

Please see sketch. Is this type of connection eliminate the anchorage checks? (Breakout, Pullout...). I believe it does. but IS there any additional checks I should be aware of? (for example; the concrete surface near the nuts? ) Thanks...

Hello guys; I have a steel building of 4 floors with concrete columns. We decided to use circular plates around the concrete columns at the connection location (Please See attached) due to the high loads on the end steel beams. Is there Any good reference for the design of this steel...

Hello Guys… I’m using shear studs for an embedded plates (Steel to pre cast concrete connections) but it happens that the beams have high moments end forces. So I have to use large diameter shear studs (up to 1’’ or more). The problem here is they told me that the welding gun available in the...

Hey guys... Im just wondering how could I provide horizontal adjustment for a steel beam (carries moment)to a concrete column without making slotted holes in the beam flange. Because as far as I know if the holes were slotted I should use S.C bolts which I cant. Can anybody tell me what is the...

Hi all, I'm about to design a cantilevered truss ( for the first time) as an openable curved roof with around 30m span, My question is: - How could this act like a truss since its only one supported; there will be bending moments near the support. Am I right? - What is the best idea for such a...

I have this cantilever steel beam with overhead connection with a concrete slab - see attached sketch-. The end forces on the beam are: M(Major) = 119 kN.M, M(Minor) = 37 kN.M, Shear (Major) - which will act as tension on the connection= 44 kN Shear (Minor) = 76 kN. My concern is how the...

What is the difference between the equation 5.2 in RCSC 2010 and the one in the specifications J3-3a).When to use each one ?